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27 sty 2023 · The toroidal propeller, one of the Lab's @RD100Awards winners, has a unique, closed-form propeller design that makes it a significantly quieter alternative to common multirotor propellers on...
- Drones
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- Drones
The toroidal propeller allows a small multirotor unpiloted aircraft, or drone, to operate more quietly than current drones that use propeller forms unchanged since the beginning of aviation.
A toroidal propeller is a type of propeller that is ring-shaped with each blade forming a closed loop. The propellers are significantly quieter at audible frequency ranges, between 20 Hz and 20 kHz, while generating comparable thrust to traditional propellers.
13 cze 2023 · A recent advancement in propeller technology are “toroidal” propellers. These devices are ring-shaped, with the blades looping around each other.
increasingly necessary to consider ameliorated propeller designs to fit alternative flight conditions. This paper provides a multi-objective look at the applications of a toroidal propeller for VTOL vehicles by considering the effect of varying flow velocity and blade shape on thrust coefficient, power coefficient, and propeller efficiency.
Toroidal Propeller. A unique propeller design has elongate elements with tips that curve and touch each other, creating a closed, stiff structure with a reduced acoustic signature. Related Patent Information. Propellers are a critical component in myriad applications, particularly in aeronautical and marine environments.
A recently proposed solution to minimize drone noise emission is the toroidal propeller, a unique design distinguished by its ring-like propeller. It is hypothesized that the closed-loop design of the toroidal propeller minimizes the tip vortices commonly generated by traditional propellers.
